At 9 o'clock in the morning of January 28, as the last beam plate on the right line of Shijinshan Bridge was steadily lifted and accurately installed to the predetermined position, all 2,524 precast beams of the Zhejiang Jiaogong Yidong Expressway 2 Bid Project under Zhejiang Communications Group were erected, and the civil engineering achieved a phased victory. At the same time, the bridge deck is expected to be completed within one month after the Spring Festival.
The total length of the Yidong Expressway 2 project is 112 kilometers, the total contract price is about 1.6 billion yuan, and the project construction is mainly based on bridges, with a total of 16 bridges. Among them, there is 1 extra-large bridge (1663 meters of Huayuan extra-large bridge), and 3 steel-concrete composite beams of 3308 tons (spans of 65 meters, 55 meters and 65 meters respectively). In addition, there is a tunnel (3182 meters of extra-long tunnel of Tianshentang, grade surrounding rock accounts for the culvert, two interchanges (painting water interchange, garden interchange), etc., and the roadbed (1.24 million cubic meters of filling, 1.17 million cubic meters of excavation) within the scope of the bid section is basically balanced.
The total length of the Shijinshan Bridge is 53 meters, a total of 16 meters of short T beam 60 pieces need to be erected, because the Shijinshan Bridge is close to the tunnel, the geological conditions of the area are complex, the special rock and soil development of silty clay in the bridge area, and the local karst is serious, and the early pile foundation construction is difficult. In order to efficiently promote the construction of the project, the construction team took multiple measures at the same time, and the parallel flow construction of multiple operation lines seized the construction progress, and simultaneously carried out the construction of pile foundation, pier column, cap beam construction and beam plate erection. On November 29, 2022, the erection of the first T-beam began; On March 17, 2023, the erection of steel plate girders on the whole line was completed; On August 21, 2023, the construction of all pile foundations will be completed; On November 24, 2023, the main line will be broken through; On November 18, 2023, all pile foundation construction was completed; On January 28, 2024, the erection of the beams and slabs was completed.
Reporter|Shen Yingyu Correspondent|Yang Shuhan.
Edit|Chen.
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